Bike bag for plane travel?

Hi, I am cycling to Paris in May and getting the plane back to Glasgow. I have 2 choices, 1)take a travel bag with me squeezed into one of the panneir bags or buy one in Paris.
I don't really wanna spend more than £50 and have seen a few for this, I know the cheap ones aren't great but plan on packing it out in Paris with bubble wrap etc.
I wanted to know if anyone can recommend a bag that would roll/fold up small enough to fit in one of my panneir bags?
Thanks
I don't really wanna spend more than £50 and have seen a few for this, I know the cheap ones aren't great but plan on packing it out in Paris with bubble wrap etc.
I wanted to know if anyone can recommend a bag that would roll/fold up small enough to fit in one of my panneir bags?
Thanks
0
Posts
https://forum.cyclinguk.org/viewtopic.php?f=16&t=129829
And this
https://forum.cyclinguk.org/viewtopic.php?f=16&t=130221
CTC bag
https://www.wiggle.com/ctc-cycling-uk-plastic-bike-bag/
Or find a bike shop in Paris scrounge a cardboard box and buy a roll of gaffer tape